| 21. | It would have ignited the firedamp, exacerbated and fuelled by coal dust in the air.
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| 22. | The explosion was caused by firedamp ignited by a'flash'from a damaged cable.
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| 23. | At a certain concentration the gas ( firedamp or methane ) burned but did not explode.
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| 24. | The explosions were caused by firedamp.
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| 25. | He invented a gas regulator and a firedamp detector which were not retained by the manufacturers.
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| 26. | This experimental form of illumination avoided the necessity of using candles which risked sparking explosions of firedamp.
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| 27. | In March 1992 at the TCC Kozla mine, 263 miners were killed due to a firedamp explosion
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| 28. | Early reports blamed a sudden inrush of firedamp from old workings which pitmen had inadvertently broken into.
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| 29. | On February 6, 1930, an explosion caused by firedamp gas occurred in the Standard mine.
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| 30. | The verdict of the coroner's jury was accidental death caused by an explosion of firedamp.
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